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Today in History: Voyager 1 reveals volcanoes on Jupiter's moon Io

3/8/2026

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Summary

Story summary

On March 8, 1979, Voyager 1 captured images revealing active volcanoes on Io, a moon of Jupiter. This groundbreaking discovery, made by imaging scientist Linda Morabito, identified over 150 active volcanoes, marking Io as one of the few volcanically active bodies in the Solar System. This finding significantly advanced our understanding of extraterrestrial geology.

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Story summary

On March 8, 1979, Voyager 1 captured images revealing active volcanoes on Io, a moon of Jupiter. This groundbreaking discovery, made by imaging scientist Linda Morabito, identified over 150 active volcanoes, marking Io as one of the few volcanically active bodies in the Solar System. This finding significantly advanced our understanding of extraterrestrial geology.